The 0.45 lambda vertical with short radial

The simulation results of a 0.45 lambda vertical with a single, short radial of 0.06 lambda, are shown. Antenna is made of copper wire, diameter 1.5mm. Lowest point of antenna is 2 meters over real ground. Antenna was modeled with MMANA-GAL basic.

0.45 vertical

 

Antenna impedance at 14.2 MHz is almost purely resistive, about 900 ohms.

Radiation diagram is omnidirectional, with vertical lobes having maximum radiation angle of 17.6 degrees.

0.45 vertical radiation diagram

 

 

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